[SunRescue] GDM20E20 won't sync wigh vta videl

[paul]

Oh, darn...

I bought a used Sun GDM20E20 and it works great with my Tatung clone.

I had grand plans of connecting my Power Computing PowerCenter Pro (Mac clone) 
to this monitor.  The Power computing machine has two video outputs - HD 15 for 
connecting to PC monitors, and the regular Mac video out.

So I bought one of those HD15-13W3 cables, connected it up and -- nothing.

I tried setting the Mac at all sorts of different video resolutions - nothing.

I thought the GDM20E20 was supposed to be multisync, and work well with vga...

What have I done wrong?  Any ideas?  

Maybe the cable is bad...??

Paul PHillips